155 research outputs found
General matter coupled N=2, D=5 gauged supergravity
We give the full lagrangean and supersymmetry transformation rules for D=5,
N=2 supergravity interacting with an arbitrary number of vector, tensor and
hyper-multiplets, with gauging of the R-symmetry group SU(2)_R as well as a
subgroup K of the isometries of the scalar manifold. Among the many possible
applications, this theory provides the setting where a supersymmetric
brane-world scenario could occur. We comment on the presence of AdS vacua and
BPS solutions that would be relevant towards a supersymmetric smooth
realization of the Randall-Sundrum "alternative to compactification". We also
add some remarks on the connection between this most general 5D fully coupled
supergravity model and type IIB theory on the T^{11} manifold.Comment: 29+1 pages, LaTeX. References added, minor corrections, final version
for Nucl. Phys.
Supergravity Predictions on Conformal Field Theories
We give an update on recent results about the matching between CFT operators
and KK states in the AdS/CFT correspondence, and add some new comments on the
realization of the baryonic symmetries from the supergravity point of view.Comment: 8 pages, uses JHEP.cls, Contribution to the proceedings of the TMR
Conference on Quantum Aspects of Gauge Theories, Supersymmetry and
Unification, Paris, 1-7 September 199
M Theory on the Stiefel manifold and 3d Conformal Field Theories
We compute the mass and multiplet spectrum of M theory compactified on the
product of AdS(4) spacetime by the Stiefel manifold V(5,2)=SO(5)/SO(3), and we
use this information to deduce via the AdS/CFT map the primary operator content
of the boundary N=2 conformal field theory. We make an attempt for a candidate
supersymmetric gauge theory that, at strong coupling, should be related to
parallel M2-branes on the singular point of the non-compact Calabi-Yau
four-fold , describing the cone on V(5,2).Comment: Latex, 28 page
Symmetry-deforming interactions of chiral p-forms
No-go theorems on gauge-symmetry-deforming interactions of chiral p-forms are
reviewed. We consider the explicit case of p=4, D=10 and show that the only
symmetry-deforming consistent vertex for a system of one chiral 4-form and two
2-forms is the one that occurs in the type II B supergravity Lagrangian.Comment: 7 pages, tiny typo corrections, based on a talk given by M. H. at the
conference "Constrained Dynamics and Quantum Gravity " held in Villasimius
(Sardinia), September 13-17 1999, to appear in the proceedings of the meeting
(Nucl. Phys. B Proc. Suppl.
Flow Equations for Non-BPS Extremal Black Holes
We exploit some common features of black hole and domain wall solutions of
(super)gravity theories coupled to scalar fields and construct a class of
stable extremal black holes that are non-BPS, but still can be described by
first-order differential equations. These are driven by a "superpotential'',
which replaces the central charge Z in the usual black hole potential. We
provide a general procedure for finding this class and deriving the associated
"superpotential''. We also identify some other cases which do not belong to
this class, but show a similar behaviour.Comment: LaTeX, 21 pages, 2 figures. v2: reference added, JHEP versio
Dirac equation for the supermembrane in a background with fluxes from a component description of the D=11 supergravity-supermembrane interacting system
We present a simple derivation of the 'Dirac' equation for the supermembrane
fermionic field in a D=11 supergravity background with fluxes by using a
complete but gauge-fixed description of the supergravity-supermembrane
interacting system previously developed. We also discuss the contributions
linear in the supermembrane fermions -the Goldstone fields for the local
supersymmetry spontaneously broken by the superbrane- to the field equations of
the supergravity-supermembrane interacting system. The approach could also be
applied to more complicated dynamical systems such as those involving the
M5-brane and the D=10 Dirichlet branes.Comment: 1+22 pages, JHEP style. v2: cosmetic changes and references added to
conform to the JHEP published versio
Various Faces of Type IIA Supergravity
We derive a duality-symmetric action for type IIA D=10 supergravity by the
Kaluza-Klein dimensional reduction of the duality-symmetric action for D=11
supergravity with the 3-form and 6-form gauge field. We then double the bosonic
fields arising as a result of the Kaluza-Klein dimensional reduction and add
mass terms to embrace the Romans's version, so that in its final form the
bosonic part of the action contains the dilaton, NS-NS and RR potentials of the
standard type IIA supergravity as well as their duals, the corresponding
duality relations are deduced directly from the action. We discuss the relation
of our approach to the doubled field formalism by Cremmer, Julia, Lu and Pope,
complete the extension of this construction to the supersymmetric case and lift
it onto the level of the proper duality-symmetric action. We also find a new
dual formulation of type IIA D=10 supergravity in which the NS-NS two-form
potential is replaced with its six-form counterpart. A truncation of this dual
model produces the Chamseddine's version of N=1, D=10 supergravity.Comment: 36 pages, plain Late
Towards reduction of type II theories on SU(3) structure manifolds
We revisit the reduction of type II supergravity on SU(3) structure
manifolds, conjectured to lead to gauged N=2 supergravity in 4 dimensions. The
reduction proceeds by expanding the invariant 2- and 3-forms of the SU(3)
structure as well as the gauge potentials of the type II theory in the same set
of forms, the analogues of harmonic forms in the case of Calabi-Yau reductions.
By focussing on the metric sector, we arrive at a list of constraints these
expansion forms should satisfy to yield a base point independent reduction.
Identifying these constraints is a first step towards a first-principles
reduction of type II on SU(3) structure manifolds.Comment: 20 pages; v2: condition (2.13old) on expansion forms weakened,
replaced by (2.13new), (2.14new
Curved BPS domain walls and RG flow in five dimensions
We determine, in the context of five-dimensional gauged
supergravity with vector and hypermultiplets, the conditions under which curved
(non Ricci flat) supersymmetric domain wall solutions may exist. These curved
BPS domain wall solutions may, in general, be supported by non-constant vector
and hyper scalar fields. We establish our results by a careful analysis of the
BPS equations as well as of the associated integrability conditions and the
equations of motion. We construct an example of a curved BPS solution in a
gauged supergravity model with one hypermultiplet. We also discuss the dual
description of curved BPS domain walls in terms of RG flows.Comment: 18 pages, LaTeX, 5 figures; added reference
Kappa-symmetric SL(2,R) covariant D-brane actions
A superspace formulation of IIB supergravity which includes the field
strengths of the duals of the usual physical one, three and five-form field
strengths as well as the eleven-form field strength is given. The
superembedding formalism is used to construct kappa-symmetric SL(2,R) covariant
D-brane actions in an arbitrary supergravity background.Comment: 20 pages. Minor clarification in text. References adde
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